John 18:19

Asked Jesus of his disciples, and of his doctrine - He probably asked him by what authority, or in virtue of what right, he collected disciples, formed a different sect, preached a new doctrine, and set himself up for a public reformer? As religion was interested in these things, the high priest was considered as being the proper judge. But all this, with what follows, was transacted by night, and this was contrary to established laws. For the Talmud states, Sanhed. c. iv. s. 1, that - "Criminal processes can neither commence not terminate, but during the course of the day. If the person be acquitted, the sentence may be pronounced during that day; but, if he be condemned, the sentence cannot be pronounced till the next day. But no kind of judgment is to be executed, either on the eve of the Sabbath, or the eve of any festival." Nevertheless, to the lasting infamy of this people, Christ was judicially interrogated and condemned during the night; and on the night too of the passover, or, according to others, on the eve of that feast. Thus, as I have remarked before, all the forms of justice were insulted and outraged in the case of our Lord. In this his humiliation his judgment was taken away. See Acts 8:33.

The high priest then asked Jesus of his disciples - To ascertain their number and power. The charge on which they wished to arraign him was that of sedition, or of rebellion against Caesar. To make that plausible, it was necessary to show that he had made so many disciples as to form a strong and dangerous faction; but, as they had no direct proof of that, the high priest insidiously and improperly attempted to draw the Saviour into a confession. Of this he was aware, and referred him to the proper source of evidence - his open, undisguised conduct before the world.

His doctrine - His teaching. The sentiments that he inculcated. The object was doubtless to convict him of teaching sentiments that tended to subvert the Mosaic institutions, or that were treasonable against the Roman government. Either would have answered the design of the Jews, and they doubtless expected that he - an unarmed and despised Galilean, now completely in their power - would easily be drawn into confessions which art and malice could use to procure his condemnation.